Electrophotographic image forming apparatus

An imaging device and electrophotography technology, applied in the direction of electrography, electrical recording technology using charge patterns, equipment using electric recording technology using charge patterns, etc., can solve the problems of increasing color registration errors, etc.

Inactive Publication Date: 2007-04-04
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

Since there is little friction, the force exerted by the feeder on the recording medium can lead to increased color registration errors

Method used

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  • Electrophotographic image forming apparatus
  • Electrophotographic image forming apparatus
  • Electrophotographic image forming apparatus

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Embodiment Construction

[0024] In order to facilitate a comprehensive understanding of the exemplary embodiments of the present invention, the matters in the specification, such as specific configurations and elements, are provided as illustrations only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0025] FIG. 1 is a cross-sectional view of an electrophotographic image forming apparatus 100 according to an exemplary embodiment of the present invention. Referring to FIG. 1 , an electrophotographic image forming device 100 is a tandem image forming device in which visible images of different colors are sequentially transferred on a sheet P and overlapped with each other to form a full-color image on the sheet P. Referring to FIG. The e...

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Abstract

An electrophotographic image forming apparatus for enhancing color registration is provided. The electrophotographic image forming apparatus includes a developing unit including a photosensitive medium, an image transferring device, and a paper feeding device. The image transferring device includes a pair of conveying rollers, a conveying belt, and a plurality of transfer rollers. The conveying belt is supported by the conveying rollers and rotates around the conveying rollers and conveys a recording medium by attaching a recording medium to a surface thereof. The plurality of transfer rollers are disposed inside the conveying belt and form a transfer nip between the recording medium and the photosensitive medium. The paper feeding device provides the recording medium to the image transferring device. The force of the image transferring device that maintains the position of the recording medium with respect to the conveying belt during image transferring is equal to or greater than the maximum force applied to the recording medium by the paper feeding device.

Description

technical field [0001] The present invention relates to an electrophotographic image forming apparatus. More particularly, the present invention relates to an electrophotographic image forming apparatus that improves the transfer quality of a toner image transferred from a photosensitive medium to paper. Background technique [0002] An electrophotographic image forming device produces an image by scanning light corresponding to a desired image onto a photosensitive medium charged to a uniform electrostatic potential to form an electrostatic latent image. The electrostatic latent image is developed into a visible image by applying a developer such as toner on the electrostatic latent image. The developed image is then transferred from the photosensitive medium to paper, and the transferred image is fused to the paper. [0003] An image forming apparatus that produces a color image develops yellow, magenta, cyan, and black images using developer cartridges containing yellow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/16G03G15/00
CPCG03G15/167G03G2215/0158G03G2215/1666G03G15/0131G03G15/00G03G15/06
Inventor 安秉华柳世铉
Owner SAMSUNG ELECTRONICS CO LTD
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